diff --git a/tools/configure.py b/tools/configure.py
index 9e420abc83..d4744ae22b 100644
--- a/tools/configure.py
+++ b/tools/configure.py
@@ -456,6 +456,7 @@ def default_from_script_path(optname, orig, alternatives):
         'duk_heap_refcount.c',
         'duk_heap_stringcache.c',
         'duk_heap_stringtable.c',
+        'duk_heap_slotcache.c',
         'duk_hnatfunc.h',
         'duk_hobject_alloc.c',
         'duk_hobject_class.c',
diff --git a/util/dist.py b/util/dist.py
index 2adb6b06fc..e24ff236f6 100644
--- a/util/dist.py
+++ b/util/dist.py
@@ -372,6 +372,7 @@ def main():
         'duk_heap_refcount.c',
         'duk_heap_stringcache.c',
         'duk_heap_stringtable.c',
+        'duk_heap_slotcache.c',
         'duk_hnatfunc.h',
         'duk_hobject_alloc.c',
         'duk_hobject_class.c',